refactor(x/circuit)!: Use collections, KVStoreService, and context.Context

[facundomedica]

Description

Closes: #XXXX

---

Author Checklist

All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.

I have...

• included the correct type prefix in the PR title
• added ! to the type prefix if API or client breaking change
• targeted the correct branch (see PR Targeting)
• provided a link to the relevant issue or specification
• followed the guidelines for building modules
• included the necessary unit and integration tests
• added a changelog entry to CHANGELOG.md
• included comments for documenting Go code
• updated the relevant documentation or specification
• reviewed "Files changed" and left comments if necessary
• confirmed all CI checks have passed

Reviewers Checklist

All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.

I have...

• confirmed the correct type prefix in the PR title
• confirmed ! in the type prefix if API or client breaking change
• confirmed all author checklist items have been addressed
• reviewed state machine logic
• reviewed API design and naming
• reviewed documentation is accurate
• reviewed tests and test coverage
• manually tested (if applicable)

[julienrbrt]

Before it would return an error if the permissions wasn't found but now it does not. I think it still should.

[facundomedica]

So if we return here we can't check later if the account that tripped the breaker is the Authority account.

It was a mistake that it returns "user permission does not exist" on error, because when no permissions were found it was returning an empty permission struct with a nil error.

See the original GetPermissions:

func (k *Keeper) GetPermissions(ctx sdk.Context, address []byte) (*types.Permissions, error) {
	store := ctx.KVStore(k.storekey)

	key := types.CreateAddressPrefix(address)
	bz := store.Get(key)

	perms := &types.Permissions{}
	if err := proto.Unmarshal(bz, perms); err != nil {
		return &types.Permissions{}, err
	}

	return perms, nil
}

[julienrbrt]

Here too btw.

[facundomedica]

Same as above, but I'll remove the text in the return error so it just returns the error

[julienrbrt]

utACK!

[testinginprod]

LGTM!